Battery charger for a transaction card

1. A method, comprising: detecting, via a charging device, a transaction card is received within a charging slot; determining, via the charging device, that an amount of remaining power in a charger battery is less than a first threshold level; requesting, via the charging device, a user device to provide power to charge the transaction card based on determining the amount of remaining power in the charger battery is less than the first threshold level, wherein the user device is communicatively coupled to the charging device via a device interface of the user device and a charging jack of the charging device; receiving, via the charging device, the power from a battery of the user device; and providing, via the charging device, the power to the transaction card to charge a battery of the transaction card via a charging terminal of the charging device.

2. The method of claim 1 , wherein the charging device is included within a case that holds the user device.

3. The method of claim 1 , wherein detecting the transaction card is received within the charging slot comprises: identifying that an integrated circuit (IC) chip of the transaction card is in contact with the charging terminal of the charging device; and detecting the transaction card is received within the charging slot of the charging device based on identifying that the IC chip is in contact with the charging terminal.

4. The method of claim 1 , wherein detecting the transaction card is received within the charging slot comprises: identifying that one or more contacts of the transaction card is in contact with the charging terminal of the charging device; and detecting the transaction card is received within the charging slot of the charging device based on identifying that the one or more contacts of the transaction card are in contact with the charging terminal, wherein an integrated circuit (IC) chip of the transaction card is powered by the power provided to the transaction card.

5. The method of claim 1 , wherein the charging jack is configured to be inserted into the device interface of the user device when the user device is inserted within a case of the charging device, wherein the case of the charging device is configured to hold the user device.

6. The method of claim 1 , further comprising: determining that an amount of power in the battery of the transaction card is less than a second threshold level, wherein the user device is requested to provide the power to charge the transaction card based on determining that the amount of power in the battery of the transaction card is less than the second threshold level.

7. The method of claim 1 , further comprising: after providing the power to the transaction card, determining that an amount of power in the battery of the transaction card satisfies a second threshold level; and ceasing providing the power to the transaction card.

8. The method of claim 1 , wherein the power is provided to the transaction card via an integrated circuit (IC) chip of the transaction card that is in contact with the charging terminal.

9. A charging device, comprising: a charging slot; a charging terminal; a user device holder to hold a user device; a charging jack that is to be inserted within a device interface of the user device when the user device is in the user device holder; one or more memories; and one or more processors, communicatively coupled to the one or more memories, to: detect that a transaction card is received within the charging slot; draw power from a battery of the user device to provide power to the transaction card; and provide the power to the transaction card via an integrated circuit (IC) chip that is in contact with the charging terminal.

10. The charging device of claim 9 , further comprising a charger battery, wherein the one or more processors are to: prior to drawing power from the battery of the user device, determine that an amount of remaining power in the charger battery is less than a threshold level; and draw power from the battery of the user device based on determining that the amount of remaining power in the charger battery is less than the threshold level.

11. The charging device of claim 9 , wherein the IC chip includes one or more contacts configured to provide the power to one or more components of the transaction card.

12. The charging device of claim 9 , wherein the one or more processors are further to: request, via the charging jack, the user device to provide the power to charge the transaction card, wherein the battery provides power to one or more components of the user device.

13. The charging device of claim 9 , wherein the one or more processors are further to: determine that an amount of power remaining in a battery of the transaction card is less than a threshold level; and draw the power from the battery based on determining that the amount of power remaining in the battery of the transaction card is less than the threshold level.

14. The charging device of claim 9 , wherein the one or more processors, when detecting that the transaction card is received within the charging slot, are to: identify that the integrated circuit (IC) chip of the transaction card is in contact with the charging terminal based on a change in resistance between a supply contact and ground contact of the charging terminal; and detect the transaction card is received within the charging slot based on identifying that the IC chip is in contact with the charging terminal.

15. A non-transitory computer-readable medium storing instructions, the instructions comprising: one or more instructions that, when executed by one or more processors, cause the one or more processors to: detect a transaction card is received within a charging slot when an integrated circuit (IC) chip of the transaction card is in contact with a charging terminal; request a user device to provide power to charge the transaction card via the charging terminal, wherein the user device is communicatively coupled to the charging terminal; receive the power from the user device; and provide the power to the transaction card to charge a battery of the transaction card.

16. The non-transitory computer-readable medium of claim 15 , wherein the one or more instructions, when executed by the one or more processors, further cause the one or more processors to: detect that the transaction card has been removed from the charging slot based on the IC chip not being in contact with the charging terminal; and send a notification to the user device that the transaction card has been removed from the charging slot to enable the user device to stop providing power.

17. The non-transitory computer-readable medium of claim 16 , wherein the notification is configured to cause the user device to alert, via a user interface of the user device, that the transaction card has been removed.

18. The non-transitory computer-readable medium of claim 16 , wherein the notification is configured to cause the user device to alert a security system that is to disable a function of the transaction card unless the transaction card is returned to the charging slot within a threshold period of time.

19. The non-transitory computer-readable medium of claim 15 , wherein the one or more instructions, when executed by the one or more processors, further cause the one or more processors to: detect that the transaction card has been removed from the charging slot based on the IC chip not being in contact with the charging terminal; and after a threshold period of time, send a notification to a security system to cause the security system to disable a function of the transaction card.

20. The non-transitory computer-readable medium of claim 15 , wherein the user device is held within a user device case that includes the one or more processors.